
  export class Header1 {
    constructor() {
      const elem = document.createElement("div");
      elem.innerText = "This is header";
      document.body.appendChild(elem);
    }
  }

  export class Content1 {
    constructor() {
      const elem = document.createElement("div");
      elem.innerText = "This is Content";
      document.body.appendChild(elem);
    }
  }

  export class Footer1 {
    constructor() {
      const elem = document.createElement("div");
      elem.innerText = "This is Footer";
      document.body.appendChild(elem);
    }
  }
